What was found
AIRCRAFT WAS NOT GROUNDED: BATTERY FAULT FOR AFT EMERGENCY POWER SUPPLY UNIT DISPLAYED DURING SYSTEM TEST. MAINTENANCE REPLACED THE BATTERY AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK PER AMM 33-51-38 WITH NO FAULTS NOTED.
- Difficulty date
- July 20, 2026
- Submitted
- July 22, 2026
- Operation
- Air carrier
- Aircraft
- N187US
- Make and model
- Airbus A321211
- Aircraft serial
- 1704
- Aircraft time
- 77,573 hours, 30,242 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- AD321431
- Condition
- No Test
- Location
- Zone 200
- Stage of operation
- IN
- How discovered
- C
- Nature of condition
- L
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.